Yesterday's Tractor Co. Parts for Farm Tractors - Compare our Prices!
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

70series PTOs not stoping.----- Warning!!!


 
Post new topic    
View previous topic :: View next topic  
Author Message
Adirondack case guy
Tractor Guru


Joined: 04 Mar 2010
Posts: 6468


Report to Moderator

PostPosted: Fri Oct 05, 2012 2:57 pm    Post subject: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Been watching Kow Farmers thread. The cable linkage is critical to proper performance of the PTO. As stated the first place to look! --If all is good in this area and a preasure check shows no pressure to the PTO clutch pack when lever is in OFF position and PTO is still turning, BEWARE.
If you can (carefully grab the shaft) with your hand, and stop it, your clutch plates are OK,but the brake could be worn out or broken off the brake acuation shaft, only 5/16" diamiter. In 970s and 1070s this could result in" blowing out" the bottom of the Tranny housing. 7,8 and 1170/5s have smaller bull gears, Not so much of an issue, BUT as I said 9s&10s have big bullgears that just clear the bottom of the tranny case and when the pto brake pad casting peice falls from the back of the PTO assy, it falls into the tranny housing, and Murphy will eventually push it between 0ne of the bullgears and the housing. Like stated on an earlier post about LA tranny, (broken, due to broken drive chain ) I have had to weld back the peices in far too many 9s&10s Trannys. My recomendation, if it doesn't stop "pull the rear housing and inspect the PTO assy and brake to be on the safe side"

Loren
 
Back to top
View user's profile
RGMartin
Tractor Expert


Joined: 14 Jan 2011
Posts: 2170


Report to Moderator

PostPosted: Fri Oct 05, 2012 3:18 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Adirondack case guy wrote:
(quoted from post at 18:57:18 10/05/12) BEWARE.
If you can (carefully grab the shaft) with your hand, and stop it, your clutch plates are OK


We have enough farmers around here with the "iron fist", don't want to become one. If you are down this way, you are welcome to grab my... Don't think I can say that?????


Anyway, thanks for the advice. Smile
 
Back to top
View user's profile
jon f mn
Tractor Guru


Joined: 25 Jan 2012
Posts: 4386
Location: Pine City Mn

Report to Moderator

PostPosted: Fri Oct 05, 2012 4:14 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

This happened to my dads 970. I've mentioned it a couple a times too. Can't spread that word enough. Thanks
 
Back to top
View user's profile AIM Address
Adirondack case guy
Tractor Guru


Joined: 04 Mar 2010
Posts: 6468


Report to Moderator

PostPosted: Fri Oct 05, 2012 5:33 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Rich.
I am hoping that the wifey and I can make some overnight trips next year to meet or reaquaint ourselves with some new and old friends from Penns-a Ketucky, and a BIN in Moundsville WV. I would love to stop by and shake your hand, and spend some time, but keep your ever turning pto to yourself LOL.- I'm not bringing my SnapOn tool chest.
Loren.
 
Back to top
View user's profile
Kow Farmer
Tractor Expert


Joined: 01 Mar 2003
Posts: 1639


Report to Moderator

PostPosted: Fri Oct 05, 2012 6:12 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Loren,
I have a neighbor across the field from me that was a Case mechanic for 40 years. I asked him about the PTO issue I am having. He said it could be a cable, but he has only seen 1 fail in the 40 years that he recalls. He thinks it is the clutches? I don't know anything about these tractors internally. I emailed Case Nutty for some info also. Any info I can get from you Case "wizards" is very much appreciated. Thank you. I really appreciate everyone's help from this forum.
Kow Farmer
Kurt
 
Back to top
View user's profile
1370rod
Tractor Expert


Joined: 07 Mar 2012
Posts: 2648


Report to Moderator

PostPosted: Fri Oct 05, 2012 7:43 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

A very good piece of advice. The brake head braking off on the 70 series in this area has not been a big problem. Much more common was the bolt falling out of the idler shaft on the 30 series and real early 70 series PTO then going under a bull gear. PTO turning complaints in this area are ussually caused by the plates being warped, worn out brake and weak brake springs and of course cable adjustment. If the PTO plates ever need replacing, use the 30 series A33012 and not the ones listed in the 1070 parts book as they are a cheaper paper style lining and not the good brass style the A33012 is. Rod.
 
Back to top
View user's profile
Adirondack case guy
Tractor Guru


Joined: 04 Mar 2010
Posts: 6468


Report to Moderator

PostPosted: Fri Oct 05, 2012 7:54 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Kurt,
Most cable failures were on open station tractors at the trunion on the engagement lever. The trunion rusted fast and would not swivel, causing the cable core to break off. There were also ocasional issues with the large cable locating nuts loosening and allowing the cable housing to slip loose from the brackets, causing improper spool movement.
You have a late model 1070 with a bonded brake pad and a stronger brake engagement spring. Low pto clutch pressure or an opperator who engaged the pto frequently to (say unplug a chopper} would warp the clutch discs so they drag, and cause the pto to overide the brake. Also the outside if the tapered clutch drum on which the Brake shoe rides is machined about .004 off center allowing the brake shaft to ride further out, on the shy side and engage the drumb more vigorusly when it revolves to the bold side If at sometime, the clutch plates were able to overide the brake, the shaft/pad would not retract, but the drumb would flex the 5/16" brake shaft and eventually the shaft would break and then the cast brake shoe was in the bottom of the tranny. As Rich said, if the pto coasts without load and can be stopped with a very light load, as with the "iron fist" as I sugested, (You should also be able to feel the efect of the offset with the break holding in one spot a bit more, if just worn), you are probably OK, BUT heed my warning.
Loren
 
Back to top
View user's profile
Adirondack case guy
Tractor Guru


Joined: 04 Mar 2010
Posts: 6468


Report to Moderator

PostPosted: Fri Oct 05, 2012 8:06 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Rod,
We had a few of thos issues also but at least in our "Cases" the cap screw lost.
Loren
 
Back to top
View user's profile
1370rod
Tractor Expert


Joined: 07 Mar 2012
Posts: 2648


Report to Moderator

PostPosted: Fri Oct 05, 2012 8:17 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Loren, for us the bolt would ussually just bulge the bottom a little causing a few hair line cracks, then would leak a little oil. Thats how the owner would notice there might be a problem. Nothing a little sealer would'nt fix, lol, Rod.
 
Back to top
View user's profile
RGMartin
Tractor Expert


Joined: 14 Jan 2011
Posts: 2170


Report to Moderator

PostPosted: Sat Oct 06, 2012 7:33 am    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Adirondack case guy wrote:
(quoted from post at 21:33:38 10/05/12) Rich.
I am hoping that the wifey and I can make some overnight trips next year to meet or reaquaint ourselves with some new and old friends from Penns-a Ketucky, and a BIN in Moundsville WV. I would love to stop by and shake your hand, and spend some time, but keep your ever turning pto to yourself LOL.- I'm not bringing my SnapOn tool chest.
Loren.



You are welcome to stop in. Maybe we can work it out so you can stack some straw or something...


Bring your paintbrush, maybe I can find a DB that needs a 94 series paint job.
 
Back to top
View user's profile
Kow Farmer
Tractor Expert


Joined: 01 Mar 2003
Posts: 1639


Report to Moderator

PostPosted: Sat Oct 06, 2012 4:05 pm    Post subject: Re: 70series PTOs not stoping.----- Warning!!! Reply to specific post Reply with quote

Loren,
Thanks for your advice. I got some email scans from Case Nutty with really good info. The PTO shaft can't be stopped by hand. I tried to lightly "grab" it. It definitely has full torque. I am going to look at the cable first and go from there. I have a feeling it is internal though. Thank you again.
Kow Farmer (Kurt)
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Case and David Brown All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651.

YT Home  |  Forums Home

Copyright © 1997-2014 Yesterday's Tractor Co.

Powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters